Home / 1,357.67-2,035.90-947.00

Finding the Fourth Proportional to 1,357.67, 2,035.90 and 947.00

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Solution

The fourth proportional to 1,357.67, 2,035.90 and 947.00 is: 1,420.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.67 : 2,035.90 = 947.00 : x
  2. Step 2: Convert to fraction form
    1,357.67/2,035.90 = 947.00/x
  3. Step 3: Cross multiply
    1,357.67x = 2,035.90 × 947.00
  4. Step 4: Simplify right side
    1,357.67x = 1,928,003.57
  5. Step 5: Solve for x
    x = 1,928,003.57/1,357.67
  6. Step 6: Final answer
    x = 1,420.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.